<template>
  <div class="report_container">
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
       <!-- 2、为 ECharts 准备一个定义了宽高的 DOM -->
       <div class="main"  style="width: 750px;height:500px;"></div>
    </el-card>
  </div>
</template>

<script>
import { messageTip } from '@/api/messageTipAPI.js'
import _ from 'lodash'
// import echarts from 'echarts'
// 1、导入 echarts
import * as echarts from 'echarts'
export default {
  name: 'Report',
  data () {
    return {
      // 需要合并的对象
      options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  },
  methods: {

  },
  created () {},
  // dom 结构渲染完毕，再执行这一函数
  async mounted () {
    // 3、基于准备好的dom，初始化echarts实例
    var myChart = echarts.init(document.querySelector('.main'))

    const { data: res } = await this.$http.get('reports/type/1')
    if (res.meta.status !== 200) return messageTip('error', '获取折线图数据失败！')

    // 4、指定图表的配置项和数据
    const result = _.merge(res.data, this.options)
    // const result = {...this.options, ...res.data}

    // 5、使用刚指定的配置项和数据显示图表。
    myChart.setOption(result)
  }
}
</script>

<style lang='less' scoped>

</style>
